"Don't worry. I bring up the cost mostly because what I've heard about Wolfsbane potion involves certain ingredients and it's best to get them fresh every time. That makes this more than a mere favour."
Lex spoke as he peered at the marks and then dropped Remus' arms. He cast a look at the rattled Mrs. Lupin and then moved to a sidebar cuboard in the office. Carefully, Lex poured out three cups of tea, placed them on a tray and brought them to the Lupins.
"For calming." It was a mixture of St. John's Wart, Marrow flowers and a few other things, red and tasting slightly smoked and salty.
Another flick of his wand had the bottles on his desk shelving themselves so there was room to rest the tray. Lex moved to his seat.
"If I'm understanding correctly, Remus has been dealing with this for years but now the dementia has become worse. Things are urgent. But I'll need to look up Wolfsbane and see my chances for getting the ingredients before I can formally agree. I don't believe in false hopes. I can let you know if my help is even possible in two days time, along with general costs."
Lex eyed Remus again. "How have you been handling your classes?"